Naslov
The effect of process conditions on the extraction yield of total polyphenols from grape seeds

Autori
Bucić-Kojić, Ana ; Planinić, Mirela ; Tomas, Srećko Bilić, Mate ; Velić, Darko ; Smrček, Ina

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of 2nd International Symposium on Agriculture / Pospišil, Milan - Zagreb : Agronomski fakultet Sveučilišta u Zagrebu, 2007, 614-618

ISBN
978-9536135-57-8

Skup
42. hrvatski i 2. međunarodni simpozij agronoma

Mjesto i datum
Opatija, Hrvatska, 13.02.2007. - 16.02.2007

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
grape seeds; process conditions; solid-liquid extraction; total polyphenols

Sažetak
The effect of process conditions such as extraction solvent, solid-liquid ratio, temperature, particle size and time on extraction yield of total polyphenols from grape seeds were studied. The concentration of total polyphenols in the extracts was determined by spectrophotometric Folin Ciocalteau method and results were expressed in gallic acid equivalent per a dry basis of grape seeds (mg GAE/gdb). The best extraction yield of total polyphenols was obtained from the smallest particle by 50% of aqueous ethanol at 80 °C and 40 ml/g solid-liquid ratio during 200 minutes.

Izvorni jezik
Engleski

Znanstvena područja
Biotehnologija, Prehrambena tehnologija

POVEZANOST RADA